<template>
    <div class="app-container">
        <el-input
            v-model="filename"
            placeholder="Please enter the file name (default file)"
            style="width: 300px"
            prefix-icon="el-icon-document"
        />
        <el-button
            :loading="downloadLoading"
            style="margin-bottom: 20px"
            type="primary"
            icon="el-icon-document"
            @click="handleDownload"
        >
            Export Zip
        </el-button>
        <el-table
            v-loading="listLoading"
            :data="list"
            element-loading-text="拼命加载中"
            border
            fit
            highlight-current-row
        >
            <el-table-column align="center" label="ID" width="95">
                <template slot-scope="scope">
                    {{ scope.$index }}
                </template>
            </el-table-column>
            <el-table-column label="Title">
                <template slot-scope="scope">
                    {{ scope.row.title }}
                </template>
            </el-table-column>
            <el-table-column label="Author" width="95" align="center">
                <template slot-scope="scope">
                    <el-tag>{{ scope.row.author }}</el-tag>
                </template>
            </el-table-column>
            <el-table-column label="Readings" width="115" align="center">
                <template slot-scope="scope">
                    {{ scope.row.pageviews }}
                </template>
            </el-table-column>
            <el-table-column align="center" label="Date" width="220">
                <template slot-scope="scope">
                    <i class="el-icon-time" />
                    <span>{{ scope.row.display_time }}</span>
                </template>
            </el-table-column>
        </el-table>
    </div>
</template>

<script>
import { fetchList } from "@/api/article";

export default {
    name: "ExportZip",
    data() {
        return {
            list: null,
            listLoading: true,
            downloadLoading: false,
            filename: "",
        };
    },
    created() {
        this.fetchData();
    },
    methods: {
        async fetchData() {
            this.listLoading = true;
            const { data } = await fetchList();
            this.list = data.items;
            this.listLoading = false;
        },
        handleDownload() {
            this.downloadLoading = true;
            import("@/vendor/Export2Zip").then((zip) => {
                const tHeader = ["Id", "Title", "Author", "Readings", "Date"];
                const filterVal = [
                    "id",
                    "title",
                    "author",
                    "pageviews",
                    "display_time",
                ];
                const list = this.list;
                const data = this.formatJson(filterVal, list);
                zip.export_txt_to_zip(
                    tHeader,
                    data,
                    this.filename,
                    this.filename
                );
                this.downloadLoading = false;
            });
        },
        formatJson(filterVal, jsonData) {
            return jsonData.map((v) => filterVal.map((j) => v[j]));
        },
    },
};
</script>
